引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览次   下载 本文二维码信息
码上扫一扫!
分享到: 微信 更多
一种免刻度的高温高压液体声速透射测量方法及装置
韩学辉,李峰弼
(中国石油大学地球科学与技术学院,山东青岛 266580)
摘要:
常用的高温高压液体声速透射测量方法及装置采用“固定”的探头间距,测量前需要刻度探头间距(液体层厚度)和探头零时(如有晶片保护壳),使用不便。基于微分形式的速度定义和恒压舱设计,开发一种可保持测试液体温度、压力恒定的“变”探头间距的透射测量新方法和装置。通过由多个探头间距增量和走时增量比值的平均值或者应用图解法确定声速,能够避免探头零时和探头间距的刻度问题。应用结果表明,新方法测量的蒸馏水以及NaCl盐水溶液声速值与标准值和文献报导值的相对偏差小于0.5%,精度较为可靠。
关键词:  液体声速  刻度  “变”间距  恒压舱技术  高温高压
DOI:10.3969/j.issn.1673-5005.2015.03.007
分类号::O 422.1
基金项目:国家油气专项(2011ZX05009-003);国家留学基金管理委员会资助课题(201306455002)
A measurement method and device with no need for calibration for acoustic velocity of liquid under the condition of high temperature and pressure
HAN Xuehui, LI Fengbi
(School of Geosciences in China University of Petroleum, Qingdao 266580, China)
Abstract:
A fixed distance between transmitting and receiving senor is widely adopted in measurement methods and devices for acoustic velocity of liquid under high temperature and high pressure conditions. The frequent calibration of the distance and delay time is necessary and complex thus makes it incontinent in the field measurement. A novel measurement method and device are developed based on differential velocity and isobaricchamber technology, in which the pressure and temperature keep constant while the distance between transmitting and receiving senor can vary. The acoustic velocity of liquid can be measured by the average ratio of distance increment and travel time increment or through graphical method without the calibration of distance and delay time. The results demonstrate that the device works well:the relative deviation between the velocities of distilled water and NaCl brine is less than 0.5% compared with the published data.
Key words:  liquid acoustic velocity  calibration  alterable distance  isobaricchamber technology  high temperature and pressure
版权所有 中国石油大学学报(自然科学版)编辑部 Copyright©2008 All Rights Reserved
主管单位:中华人民共和国教育部 主办单位:中国石油大学(华东)
地址: 青岛市黄岛区长江西路66号中国石油大学期刊社 邮编:266580 电话:0532-86983553 E-mail: journal@upc.edu.cn
本系统由:北京勤云科技发展有限公司设计